What is the chromosomal status of the gametophytic stage in bryophytes?

The term $Bryophyta$ was given by

Bryophytes comprise:

The sporophyte is subsidiary and parasitic on the gametophyte in

What is the first phase of the moss life cycle?

Identify the mosses and liverworts from the following list:
$I$ - $Sphagnum$,$II$ - $Funaria$,
$III$ - $Marchantia$,$IV$ - $Polytrichum$
$\text{Mosses} \quad\quad \text{Liverworts}$